Floor-scraping machine.



G. S. NEWMAN.

FLOOR SGRAPING MACHINE.

APPLICATION FILED MAY 25, 1908.

909,652; Patented Jan. 12, 1909.

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alien m4 GEORGE S. NEWMAN, OF OONNERSVILLE, INDIANA.

FLOOR-SGRAPIN G MACHINE.

Specification of Letters Patent.

Patented Jan. 12, 1909.

Application filed May 25, 1908. Serial No. 434,845.

To all whom it may concern:

Be it known that I, GEORGE S. NEWMAN, a citizen of the United States,residing at Connersville, in the county of Fayette and State of Indiana,have invented certain new and useful Improvements in Floor-ScrapingMachines; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to improvements in floor scraping machines, inwhich the knives are supported by a suitable frame and are held to thework by means of weights in the form of rolls, or in any other form.

The objects of my invention are to provide such a machine which shall becertain in action, cheap to construct, and which shall be capable ofreadily performing its work, whether the knives are drawn against thegrain of the wood, with the grain, or in any other direction. Iaccomplish these objects, by the combination of parts more fullyhereinafter described and particularly pointed out in the claims, andone of the main features of my invention is the construction by whichthe knives are placed at an angle to the frame both vertically andlongitudinally, whereby a draw out is obtained.

Referring to the accompanying drawings forming a part of thisspecification-Figure 1 represents a side elevational view of my machineshowing the handle in two positions, Fig. 2 an end elevational view, and

Fig. 3 a sectional view of a portion ofthe frame taken through one ofthe knives.

Like letters refer to like parts in all the views.

A represents a suitable frame made from metal or other suitablematerial, and to this frame are attached suitable knives. These knivesare composed of the slotted plates C, provided with a fastening plate Bfitting thereover and having the bolts or other fasteners D passingthrough the same, through the slots in the plate C, and into the mainframe A of the machine, thereby securely clamping the parts in place.

The plates C, are provided with the cut.- ting edge shown, and areinclined to the vertical, as best shown in Fig. 3. The inclined surfaceof the frame A, to which these plates C are secured, is also inclined ina transverse direction, as best shown in Fig. 1. It results from thisdouble inclination of the cutting plates 0, that if the frame A is moveddirectly across the grain, the cutting edge of the said plates C will beinclined thereto in a horizontal plane. It likewise results from thisdouble inclination of the said plates C, that if the frameA is urgedparallel of the grain of the wood, the said cutting edges would belikewise inclined to the grain, and in either case the machine willperform its function of scraping the floor without tearing or marringthe grain of the wood.

E represents spring pressed rollers supported in the U-shaped frame Fand controlled by the spring Gr and nut H. The function of these rollersE is to take up all jar in the machine.

J represents an attachable weight of any suitable dimensions, providedwith a cut out place K to accommodate the spring G and its attachedparts. This weight is readily put on and taken off the frame A. Otherweights may be placed on top of weight T and thus regulate the pressureupon the cutters as the character of the work may demand. This weight isadapted to rest loosely in a recess in the main frame A, which is shownatL in Fig. 3 and in dotted lines in Fig. 1. The said frame A is alsoprovided with rollers M at or near the end opposite to the cutters, andthe frame is suitably cut away to accommodate said rollers. A suitablehandle N is pivoted to the main frame A at O, and is adapted to occupythe position shown in Fig. 1, in full lines, or to be swung over andoccupy the position in said figure shown in dotted lines. A suitablelink P is provided on the main frame A which is adapted to be connectedwith the handle N when it is in the dotted line position. A lug Q isprovided on the frame A to limit the swing of the handle to its fullline position as shown, and when in this position by pressing down uponthe handle the knives can be readily raised and the machine advances inorder to accomplish a new cut. On the other hand, by removing the weightJ from the frame A, swinging the handle over into its dotted lineposition, and joining it to the link P, as shown, the machine may bepulled instead of pushed.

The operation of my machine is simple. When it is desired to scrape afloor it is suitably weighted, if desired, and the ma chine pushedeither with the grain or perpendicular thereto, and in either case theknives will cut at an angle to the said grain.

By simply depressing the handle end the knives are raised and new cuttaken.

When it is desired to put the machine instead of pushing the same, thehandle is readily thrown over into its dotted line posi-- ti'on as shownin Fig. 1 and the operation is the same.

I am aware that previous to my invention floor scraping machines havebeen made in which a single knife'set at a ri ht angle with thedirection of the travel, of the machine, and carried upon weights in theshape of rolls or of other form have been made. I, therefore, do notclaim such a combination broadly, but

What I do claim as my invention and desire to secure by Letters Patentis,

1. In a floor scraping machine, the combination of a frame A providedwith an opening L; a weight J resting on the frame and extending oversaid opening L, and provided with a recess K over said opening, saidframe being provided With'a surface inclined both vertically andhorizontally, a knife C supported on said surface, suitable clampingmeans for holding said knife to said surface, rollers E, and a springfor depressingthem, and a yoke VF carried by the frame and proj ectingover said opening for supporting said rollers, said spring and yokebeing received in said recess -K, substantially as described.

2. In a floor scraping machine, the combi nation of a frame A providedwith an opening L, a Weight J resting on said frame and extending oversaid openingL and provided with a recess K over said'opening, said frame7 being provided with a surface inclined both vertically andhorizontally, a knife C supported on said surface, suitable clampingmeans for holding said knife to said surface, rollers E, a yoke Fcarried by the frame and projecting over said opening for supportingsaid rollers,a projectionR on said yoke, a spring G surrounding the saidprojection R, a nut H on said projection controlling said spring, saidyoke, spring and nut being received in said recess K, a roller M on saidframe A, and a handle N, substantially as described. 7

3. In a floor scraping machine, the combination of a frame A providedwith an opening L, a weight J resting on the frame and extending oversaid opening Land provided with a recess K over said opening, said frame.being provided with a surface inclined both vertically and horizontallyon saidsurface, suitable clamping means for holding said knife to saidsurface, rollers E, and a yoke F carried by the frame and projectingover said opening for supporting said rollers, a projection R on saidyoke, ,a spring Gr' surrounding the said projection It, a nut Hcontrolling said spring, said yoke, spring and nut being adapted to bereceived insaid recess 'K, a roller M mounted at the rear of said frame,a lug Q in said frame, a handle'N pivoted to said lug and a link pivotedto the frame and adapted to be connected with said handle, wherebythesaid machine may be pulled instead of pushed, substantially asdescribed.

In testimony whereof, I affix my signature, in presence of twowitnesses.

GEORGE S. NEWMAN.

Witnesses:

FREMONT CLIFFORD, CLAUDE L. MA'rr-rnwsoN.

